Foxtab

Foxtab is a 3D tab switching add-ons for Firefox. Yet another great Firefox add-on you should get your hands on. The 3D tab switching have similar feel to Cooliris, and can be activated (conveniently) via the ctrl+tab keystroke.

Notable feature:

Can be activated via keystroke or mouse gesture. The mouse gesture never really work for me, but the keystroke is great

Customizable look and feel, you can even set a wallpaper for the tab switcher